LP-AM243: LP-AM243 uart boot question

hii ,

I followed the steps as TI recommendsAM243x MCU+ SDK：EVM 设置  for the  UART BOOT mode and I occure a problem.

​​Issue Description:​​ When executing the UART flashing process using the command:

python uart_uniflash.py -p COM12 --cfg=sbl_prebuilt/am243x-lp/default_sbl_null.cfg

The process successfully completes the first command in the configuration file (sending the flash writer):

--flash-writer=sbl_prebuilt/am243x-lp/sbl_uart_uniflash.release.hs_fs.tiimage

However, when attempting to execute the second command (flashing the application):

--file=sbl_prebuilt/am243x-lp/sbl_null.release.hs_fs.tiimage --operation=flash --flash-offset=0x0

The progress bar gets stuck at 0% and eventually fails with XMODEM protocol errors.  ​​Environment:​​

• SDK: MCU+ SDK AM243x 10.01.00.32
• Board: AM243x LP
• Connection: UART via COM12, 115200 baud